Nash co-founders were previously CoZ devs so switching to another chain without a good reason wouldn’t make sense, although if serious issues persist that could easily be done.

Fortunately the exchange doesn’t completely rely on NEO’s performance to function or any other chain for that matter. Deposits/withdrawals would probably get affected but trading should work just fine during hiccups like this one.

You can laugh now and believe the things will be what it is right now and forever Blockchain
,or follow up what is growing up everywhere in the whole world INTERNET OF THINGS DEVICES,if you have lived in 1949 you would have laughed about credit cards too,JUST WAIT AND SEE and research IOTA and internet of things market,Instead of what we have today an internet of Information mixed with now the Blockchain´s Internet of value witch is much better than internet of Information but all of them have scale problems BTC,ETH,ADA, what ever coin have scale problems,And sooner or later they will be passed by INTERNET OF THINGS,IOTA,???

Dude, the issue of switching from NEO to Ethereum does not arise because the Nash platform/exchange does not run or operate on the NEO blockchain…
Hope this helps you and others who appear to be confused

With Nash, deposits and withdrawals of ETH/ERC20 tokens happen on ethereum.
Deposits and withdrawals of NEO/NEP5 happen on neo.
Later if more chains get added they also get settled on that specific chain.